What’s on TV Wednesday: ‘Fargo’ and ‘Nova: Holocaust Escape Tunnel’

“Fargo” returns and draws Ewan McGregor, playing two parts, into its quirky lair. “Nova: Holocaust Escape Tunnel” visits a forgotten passageway to freedom. And brush up on “House of Cards” while there’s still time.

What’s on TV

FARGO10 p.m. on FX. It’s time to head north again to what James Poniewozik, writing in The New York Times, called “the land of 10,000 quirks.” In this third season, the action focuses on Ewan McGregor, playing both Emmit Stussy, the “parking lot king” of Eden Prairie, Minn., and Ray Stussy, Emmit’s parole-officer brother, who believes that Emmit cheated him out of his birthright and decides to have him robbed. And in keeping with “Fargo” tradition, things head far, far south. There’s also a slick real estate mogul (David Thewlis) with treacherous Russian connections, and the requisite no-nonsense cop (Carrie Coon). “The real draw of the story is the show’s delight in telling it,” Mr. Poniewozik wrote. “There’s no patter like ‘Fargo’ patter.”

NATURE: HOTEL ARMADILLO8 p.m. on PBS. Arnaud Desbiez, a Brazilian conservation biologist, and his team in the Pantanal, the world’s largest tropical wetland, explain why the secretive giant armadillo — which spends about 75 percent of its life burrowed underground — is vital to the region’s biodiversity.

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Jews in Ponar digging a trench in which they were later buried after being shot.CreditYad Vashem

NOVA: HOLOCAUST ESCAPE TUNNEL9 p.m. on PBS (check local listings). Last June, archaeologists announced that they had uncovered a forgotten tunnel: a 100-foot-long passageway, five or more feet below the surface, that 80 Jews dug mostly by hand as they tried to escape from a Nazi extermination site in Lithuania during World War II. Here, children of 11 of those men, who evaded what were known as the Ponar killing pits — where as many as 100,000 people were shot at close range, with their bodies dumped or burned — recount their fathers’ lives.

BROCKMIRE10 p.m. on IFC. Brockmire’s ex-wife, Lucy (Katie Finneran) — the one whose sexcapades prompted his meltdown at the mike — shows up in Morristown. So Brockmire starts drinking again.

WEEDIQUETTE10 p.m. on Viceland. The network anticipates International Cannabis Day on Thursday with new seasons of Krishna Andavolu’s exploration of marijuana legalization and, at 10:30, “Bong Appétit,” nominated for a James Beard Award.

What’s Streaming

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Robin Wright and Kevin Spacey in “House of Cards.”CreditDavid Giesbrecht/Netflix

HOUSE OF CARDSon Netflix.The ominous Season 5 trailer dropped during President Trump’s inauguration, along with a date: 5/30/17. Well, that day is fast approaching. Restream the previous four seasons in the life of Frank Underwood (Kevin Spacey), the minority whip who schemed his way into the White House, and his Lady Macbeth, Claire (Robin Wright) — and anticipate how this latest installment might compare with reality. “There is something weird about when politics and entertainment and journalism all start to bleed into the same thing,” the showrunner Frank Pugliese said in an interview with The Times. “It starts to feel a little funky.”